No install required on Mac, although free modified Vine Server will give you access to media keys (Play/Pause, etc.).

Multiple Desktop users on Mac: Use Screen Sharing on Leopard or Apple Remote Desktop on Tiger instead of Vine Server.

For Windows, free modified TightVNC server will also give you access to media keys.

-- You cannot view the computer screen on your iPhone with this app. For that feature, please check out our flagship application, Jaadu VNC --

To enable Zoom on the Mac, go to System Preferences > Universal Access and enable Zoom. Then click the Options button, and set it to keep the mouse in the center of the screen. Visit touchpadelite.com for more information.